John e



(No Model.)

- J. R. SAMPSON.

PLOW STANDARD. No. 308,202. Patented Nov. 18, 1884.,

I DIVENTOR: 2 W? BY ATTORNEYS.

lUNrran STATES Parent @rricn.

JOHN R. SAMPSON, OF BENNETTSVILLE, SOUTH CAROLINA.

PLOW-STANDARD.

SPECIFICATION forming part of Letters Patent No.308,202, 1ated November 18, 1884-.

Application filed April 25, 1884. (No model.)

To all? whom, it may concern.-

Be it known that 1, JOHN R. SAMPSON, of Bennettsville, in the county of Marlborough and State of South Carolina, have invented certain new and useful Improvementsin Plow- Standards, of which the following is a full, clear, and exact description.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation of one of my improved plow-standards, part being broken away. Fig. 2 is a front elevation of the same. Fig. 3 is asectional end elevation of the groundbar and shoe, taken through the liner 0;, Fig. 1. Fig. at is a sectional end elevation of the ground bar and shoe, taken through the line 3 y, Fig. 1. I

The object of this invention is to facilitate the adjustment of the plow-plate and promote lightness and strength in plow-standards.

The invention consists in a plow-standardconstructed with a ground-bar and a beamplate arranged with the forward parts at a greater distance apart than their rear parts, and connected at their forward ends by a front bar having its lower part curved in the arc of a circle and provided with a slot, and its upper part curved upward and rearward and connected at their rear ends by a brace-bar. To the ground-bar is bolted a grooved shoe to protect the said ground-bar from wear, as will be hereinafter fully described.

A represents the ground-bar or foot of the standard, upon the forward end of which is formed the lower end of the front bar, B. The lower part of the front bar, B, for. about twothirds the length of the said bar, is curved upon the arc of a circle to form a seat for the plowplate, as indicated in dotted lines in Fig. 1, so that the said plow-plate can be moved up and down to vary the angle at which its cutting edge enters the ground, as the work to be done and the character of the soil may require. The curved part of the front bar, B, has a slot, B, formed in it to receive the bolt that fastens the plow-plate to its seat, so that the plow plate can be adjusted by loosening the nut of so the said bolt, and thus become self-sharpening.

The upper part of the front bar, B, is curved or inclined rearward and upward, and its upper end is connected with the beam-plate O at a little distance from the forward end of the said beanrplate. The projecting forward end of the beam-plate O has a slot, 0, formed in it, to receive a bolt for securing the standard to the plow-beam. This construction brings the slotted forward end of the beam-plate O in the rear of the curved line of the plow-seat, so that a long or reversible plow-plate can be used. In the rear part of the beam-plate Gis formed a hole, 0*, to receive a second bolt for securing the standard to the beam. Vith the rear end of the beam-plate G is connected the upper end of the rear or brace bar, D, of the standard, the lower end of which is connected with the rear end of the ground-bar or foot A. The rear bar, D, is made of such a length that the vertical distance of the rear end of the beam-plate O and the ground-bar A will be less than the vertical distance between the forward ends of the said beam-plate and groundbar, so that the ground-bar will have a down ward and forward inclination when the platebeam is in a horizontal position. The groundbar A is protected from wear by a shoe, E, the upper side of which is grooved to receive the said ground-bar A. The forward end of the groove in the shoe E is closed to form a shoulder for the forward end of the groundbar A to rest against, and which sustains the forward push of the said groundbar. The shoe E is held in place upon the ground-bar A by one or more bolts, F, which pass through them and have nuts screwed upon their upperends. The heads of the bolts F are countersunk into the lower side of the shoe E, so that the outer surface of. the said heads will be flush withthe outer surface of the shoe E, as shown in Fig. 1. \Vith this construction the plow-standard will be light, strong, and durablc, and will allow the plow-plate to be read ily adjustable.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A plow-standard constructed, substan tially as herein shown and described, with a ground-bar, A, and a beam-plate, 0, arranged lower front part curved in the arc of a circle,

and provided with a slot, B, and its upper part curved rearward and upward, said bar A and plate 0 being connected at their ends by a bar, D, substantially as and for the purpose set forth.

JOHN R. SAMPSON.

\Vitnesses:

S. A. MARSHALL, J. E. Coxn, Jr. 

